Talk to a lawyer that specializes in opening up a corporation. You have the options of LLC, I-corp, S-corp, etc. There are little nuances depending on what you want to do that will help guide what kind of corp you set up. Things like other business the corp engages in will change how taxes are done as well as recurring fees to keep the corp running. A CPA could do the paperwork but he might not know what is the best option for you and your needs.
Any Officer (CEO, Presidet, VP, CFO, COO etc) in the corp will be allowed to possess the NFA item. The corp OWNS the item, the officers DO NOT own the items. If the corp goes away then you have do a $200/item transfer to get the items transfered to your name or sell the corporation to someone so that they can be listed as the officer.
Under a trust you should be able to list corporations that are held by the trust. So Joe Blows Trust may hold "A LLC", "B LLC", and "C LLC". The benefactors of the trust would then have full access to any NFA item in A, B, or C LLC. While the officers of "A LLC" would only have full access to NFA items held by "A LLC".